Product Info

Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design 33 / 130
CAM_I2C_
SDA
84
OD
I2C data signal of
camera
1.8V power domain.
Keypad Interfaces
Pin Name
Pin No
I/O
Description
DC Characteristics
Comment
PWRKEY
114
DI
Turn on/off the
module
V
IL
max=0.63V
V
IH
min=1.17V
Pull-up to 1.8V
internally, active low.
KEY_VOL_
UP
95
DI
Volume up
V
IL
max=0.63V
V
IH
min=1.17V
If unused, keep this
pin open.
KEY_VOL_
DOWN
96
DI
Volume down
V
IL
max=0.63V
V
IH
min=1.17V
If unused, keep this
pin open.
SENSOR_I2C Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
SENSOR_I2C
_SCL
91
OD
I2C clock signal for
external sensor
1.8V power domain.
SENSOR_I2C
_SDA
92
OD
I2C data signal for
external sensor
1.8V power domain.
ADC Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ADC
128
AI
General purpose
ADC
Maximum voltage not
exceeding 1.7V.
VBAT_SNS
133
AI
Input voltage sense
Maximum input
voltage is 4.5V.
VBAT_
THERM
134
AI
Battery temperature
detection
RF Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ANT_MAIN
87
IO
Main antenna
50Ω impedance
ANT_DRX
131
AI
Diversity antenna
ANT_GNSS
121
AI
GNSS antenna
ANT_WIFI/BT
77
IO
Wi-Fi/BT antenna